Muir Inlet, Glacial inlet in Glacier Bay National Park, Alaska, United States.
Muir Inlet is a glacial waterway in Glacier Bay National Park that extends several miles inland with steep rock walls and multiple tidewater glaciers feeding into it. The inlet branches into several arms, each lined with snow-capped peaks and showing signs of ongoing glacial activity.
Naturalist John Muir explored this waterway in 1879, bringing scientific attention to glacial movements in the region. His findings sparked greater interest in studying how glaciers change and shape the landscape.
The Tlingit people used these waters for fishing and travel for generations before glacial changes reshaped the landscape.
The best way to reach this inlet is by boat tour, with most trips available from June through September when water conditions are most favorable. All visitors to the park need to register or obtain permission before entering the area.
The water displays a distinctive blue-green hue created by fine glacial sediment suspended throughout the inlet. This color shifts with the seasons as glacier melt rates change, making each visit look different.
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